TY - JOUR
T1 - A review on recent developments in electrochemical hydrogen peroxide synthesis with a critical assessment of perspectives and strategies
AU - Anantharaj, Sengeni
AU - Pitchaimuthu, Sudhagar
AU - Noda, Suguru
N1 - Funding Information:
This work is supported in part by the grant-in-aid by the Japan Society for the Promotion of Science (JSPS) (Grant number: JP19F18346 ). S. P would like to thank the European Regional Development Fund (ERDF), and Welsh Government for providing the Ser Cymru-II Rising Star Fellowship Grant.
Funding Information:
Sengeni Anantharaj obtained his undergraduate and postgraduate degrees in chemistry from The Presidency College affiliated to University of Madras, Chennai in 2011 and 2013, respectively. Later, he obtained his PhD in 2018 from CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, India. Currently, he is availing the prestigious JSPS Postdoctoral Fellowship at Waseda University since January 2019. His research interests include performance driven design of electrocatalysts, energy conversion (both fuel-forming and fuel-consuming) electrocatalysis, electroactivation, and anodization.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Electrochemical hydrogen peroxide synthesis using two-electron oxygen electrochemistry is an intriguing alternative to currently dominating environmentally unfriendly and potentially hazardous anthraquinone process and noble metals catalysed direct synthesis. Electrocatalytic two-electron oxygen reduction reaction (ORR) and water oxidation reaction (WOR) are the source of electrochemical hydrogen peroxide generation. Various electrocatalysts have been used for the same and were characterized using several electroanalytical, chemical, spectroscopic and chromatographic tools. Though there have been a few reviews summarizing the recent developments in this field, none of them have unified the approaches in catalysts' design, criticized the ambiguities and flaws in the methods of evaluation, and emphasized the role of electrolyte engineering. Hence, we dedicated this review to discuss the recent trends in the catalysts' design, performance optimization, evaluation perspectives and their appropriateness and opportunities with electrolyte engineering. In addition, particularized discussions on fundamental oxygen electrochemistry, additional methods for precise screening, and the role of solution chemistry of synthesized hydrogen peroxide are also presented. Thus, this review discloses the state-of-the-art in an unpresented view highlighting the challenges, opportunities, and alternative perspectives.
AB - Electrochemical hydrogen peroxide synthesis using two-electron oxygen electrochemistry is an intriguing alternative to currently dominating environmentally unfriendly and potentially hazardous anthraquinone process and noble metals catalysed direct synthesis. Electrocatalytic two-electron oxygen reduction reaction (ORR) and water oxidation reaction (WOR) are the source of electrochemical hydrogen peroxide generation. Various electrocatalysts have been used for the same and were characterized using several electroanalytical, chemical, spectroscopic and chromatographic tools. Though there have been a few reviews summarizing the recent developments in this field, none of them have unified the approaches in catalysts' design, criticized the ambiguities and flaws in the methods of evaluation, and emphasized the role of electrolyte engineering. Hence, we dedicated this review to discuss the recent trends in the catalysts' design, performance optimization, evaluation perspectives and their appropriateness and opportunities with electrolyte engineering. In addition, particularized discussions on fundamental oxygen electrochemistry, additional methods for precise screening, and the role of solution chemistry of synthesized hydrogen peroxide are also presented. Thus, this review discloses the state-of-the-art in an unpresented view highlighting the challenges, opportunities, and alternative perspectives.
KW - Electrocatalysis
KW - Electrochemical synthesis
KW - HO generation
KW - Oxygen reduction reaction
KW - Water oxidation reaction
UR - http://www.scopus.com/inward/record.url?scp=85097586033&partnerID=8YFLogxK
U2 - 10.1016/j.cis.2020.102331
DO - 10.1016/j.cis.2020.102331
M3 - Review article
C2 - 33321333
AN - SCOPUS:85097586033
SN - 0001-8686
VL - 287
JO - Advances in Colloid and Interface Science
JF - Advances in Colloid and Interface Science
M1 - 102331
ER -